echo hello?world
echo hello*world
echo hello^world
echo hello%world
echo "\$hello"
echo "\\"
echo "\n"
echo -e "one\\\\\ntwo\\\\\nthree"
echo "\""
echo "<"
echo '<'
echo "<<"
echo '<<'
echo "<<<"
echo '<<<'
echo ">"
echo '>'
echo ">>"
echo '>>'
echo ">>>"
echo '>>>'
